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Relationship between Phase Fractions and Mechanical Properties in Heat-Treated Laser Powder- Bed Fused Co-Based Dental Alloys

  • Metal additive manufacturing of dental prostheses consisting of cobalt−chromium−tungsten (Co−Cr−W) alloys poses an alternative to investment casting. However, metal additive manufacturing processes like Laser Powder‐Bed Fusion (LPBF) can impact the elastic constants and the mechanical anisotropy of the resulting material. To investigate the phase compositions of mechanically different specimens in dependence of their postprocessing steps (e. g. heat treatment to relieve stress), the current study uses X‐ray Diffraction (XRD), Electron BackScatter Diffraction (EBSD), and Transmission Electron Microscopy (TEM) for phase identification. Our studies connect plastic deformation of Remanium star CL alloy with the formation of the hexagonal ϵ‐phase and heat treatment with the formation of the D024‐phase, while partially explaining previously observed differences in Young's moduli.

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Author:J. von Kobylinski, L. Hitzler, R. Lawitzki, C. Krempaszky, A. Öchsner, E. Werner
Parent Title (English):Israel Journal of Chemistry
Publisher:Wiley-VCH GmbH
Place of publication:Weinheim
Document Type:Article
Year of Completion:2020
Release Date:2021/01/07
First Page:607
Last Page:614
Open Access?:nur im Hochschulnetz
Relevance:Peer reviewed Publikation in Master Journal Liste (Clarivate)
Licence (German):License LogoVeröffentlichungsvertrag ohne Print-on-Demand